Across
- 1. measure of the amount of matter in an object
- 3. what to do to forces acting in the same direction
- 6. when gravity and air resistance are equal
- 7. fastest an object can go in free fall
- 10. how weight is measured
- 11. direction of air resistance force
- 12. force that pulls all objects towards each other
- 15. force that opposes motion
- 19. surfaces rubbing against each other
- 20. how to draw forces
- 22. when an object is accelerating due to gravity
- 23. air resistance increases with this
- 24. friction of objects that aren't moving
- 25. forces have strength and ?
- 26. air resistance increases with this
- 27. a push or a pull
- 28. measure of gravitational force exerted on an object
Down
- 2. how objects in a vacuum fall
- 4. no net force
- 5. fluid friction of objects falling through air
- 8. a liquid or a gas
- 9. doesn't affect how fast an object falls
- 11. cause an object's motion to change
- 13. force of gravity is affected by mass and ?
- 14. SI unit of mass
- 16. what to do to forces in opposite directions
- 17. what forces cause
- 18. combination of all forces acting on an object
- 21. SI unit of force
- 23. surface type with less friction